![Ameriphone AlertMaster AM-DX Notification System Door Announcer](https://s.turbifycdn.com/aah/headsetzone/ameriphone-alertmaster-am-dx-notification-system-door-announcer-14.png)
Ameriphone AlertMaster AM-DX Notification System Door Announcer
Description
- The Alertmaster AM-DX door announcer notifies you when someone knocks or when door bell or intercom buzzer sound
- Wireless transmission to master unit, no wiring or plug-in necessary